Home / 138,495.69-191,124.18-74,833.65

Finding the Fourth Proportional to 138,495.69, 191,124.18 and 74,833.65

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Solution

The fourth proportional to 138,495.69, 191,124.18 and 74,833.65 is: 103,270.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,495.69 : 191,124.18 = 74,833.65 : x
  2. Step 2: Convert to fraction form
    138,495.69/191,124.18 = 74,833.65/x
  3. Step 3: Cross multiply
    138,495.69x = 191,124.18 × 74,833.65
  4. Step 4: Simplify right side
    138,495.69x = 14,302,519,992.66
  5. Step 5: Solve for x
    x = 14,302,519,992.66/138,495.69
  6. Step 6: Final answer
    x = 103,270.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.